EP1195124B1 - Système d'écoulement pour aspirateur - Google Patents

Système d'écoulement pour aspirateur Download PDF

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Publication number
EP1195124B1
EP1195124B1 EP01402323A EP01402323A EP1195124B1 EP 1195124 B1 EP1195124 B1 EP 1195124B1 EP 01402323 A EP01402323 A EP 01402323A EP 01402323 A EP01402323 A EP 01402323A EP 1195124 B1 EP1195124 B1 EP 1195124B1
Authority
EP
European Patent Office
Prior art keywords
suction
passage
ejector
air
vacuum cleaner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01402323A
Other languages
German (de)
English (en)
Other versions
EP1195124A2 (fr
EP1195124A3 (fr
Inventor
Seong Ho Cho
Seong Bin Lee
Sung Ii Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR10-2000-0058079A external-priority patent/KR100375624B1/ko
Priority claimed from KR10-2000-0058080A external-priority patent/KR100375625B1/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1195124A2 publication Critical patent/EP1195124A2/fr
Publication of EP1195124A3 publication Critical patent/EP1195124A3/fr
Application granted granted Critical
Publication of EP1195124B1 publication Critical patent/EP1195124B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/16—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with suction devices other than rotary fans
    • A47L5/18—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with suction devices other than rotary fans with ejectors, e.g. connected to motor vehicle exhaust
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/24—Hand-supported suction cleaners

Definitions

  • the present invention relates to a vacuum cleaner, and more particularly, to a passage system of a vacuum cleaner in which an air passage system is modified to increase an amount and speed of air drawn into a vacuum cleaner without having to increase a capacity of a motor so that the performance of a vacuum cleaner is enhanced.
  • Conventional vacuum cleaners are classified, depending upon a use and a shape, into a cylindrical vacuum cleaner which is generally employed at home, a pot-type vacuum cleaner, which is generally known as a canister vacuum cleaner, for a large places such as a place of business that requires a large capacity, and a portable vacuum cleaner which is easily carried around and employed for a specified purpose (such as a vehicle).
  • FIG. 1 is a schematic cross-sectional view illustrating a construction of a passage system of the conventional vacuum cleaner.
  • the passage system of the conventional vacuum cleaner comprises a suction motor 10 which is installed on an upper end of the vacuum cleaner to provide a suction force for sucking the outside air into the vacuum cleaner, a suction fan 20 which is placed below the suction motor 10 and blades for sucking the outside air using rotating force of the suction motor 10, a dust filter 30 which is placed below the suction fan 20 to filter dust contained in the outside air sucked by the suction fan 20, a dust-collecting bucket 40 which is positioned below the dust filter 30 to collect dust and the like filtered by the dust filter 30, and a suction nozzle 50 which is arranged below the dust collecting bucket 40 to elevate the speed of flow of the outside air sucked from the outside by the suction fan 20, up to a predetermined value.
  • the suction motor 10 When a user turns on the vacuum cleaner to perform a cleaning work, the suction motor 10 is initiated. The Rotating force of the suction motor 10 is transferred to the suction fan 20 which is rotatably attached to a lower end of the suction motor 10. Thereafter, as the suction fan 20 rotates, a low-pressure space is formed below the suction motor 10 to draw in the air from the outside into the vacuum cleaner.
  • the outside air is then directed to the dust filter 30.
  • the dust filter 30 while air can freely pass through the dust filter 30, dust and the particles having a size larger than that of meshes of the dust filter 30, are filtered by the dust filter 30.
  • the air which passed through the dust filter 30, is exhausted to the outside after sequentially passing through the suction fan 20 and the suction motor 10. While the air passes through the suction motor 10, heat generated by the suction motor 10 is cooled.
  • dust and other particles contained in the outside air are filtered by the dust filter 30. If dust and the particles are collected in the dust-collecting bucket 40 built up to the point in which in flow of the air is effected and degrade an efficiency of the vacuum cleaner, a user of the vacuum cleaner should empty out the dust collecting bucket 40.
  • the air Since the air, which is discharged to the outside after passing through the suction motor 10, flows at a high speed, the air retains a substantial amount of kinetic energy which could be utilized to improve the efficiency.
  • the passage system of the conventional vacuum cleaner dose not employ any means to reuse the air having kinetic energy.
  • Reference DE19530976 discloses a vacuum cleaner which has a feedback device for the air cleaned by the filter, with this air is returned to the suction opening in order to increase the suction at the head.
  • the feedback device comprises a pipe connecting the cleaner and the head.
  • the suction opening in the head has a chamber between it and the wall of the head into which the returned clean air enters. The air then emerges through a slotted boundary to entrer the suction opening.
  • the chamber has deflecting surfaces to shape the returned air flow, this being at a sharp angle to the surface being cleaned.
  • the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a passage system of a vacuum cleaner, which enables the air to be exhausted is utilized again to provide an additional source of energy for the vacuum cleaner. And, in the case of a rechargeable vacuum cleaner wherein an output cannot be raised beyond a predetermined level due to the limitation within its own configuration, the passage system of the vacuum cleaner in accordance with the present invention allows a cleaning work to be performed in more efficient manner with the same power supply source.
  • the present invention provides a passage system of a vacuum cleaner, according to claim 1.
  • the passage system of a vacuum cleaner according to the present invention provides advantages in that, since energy, which is contained in air discharged through a suction motor, is utilized again, cleaning performance of the vacuum cleaner can be improved.
  • Another aspect of the invention relates to a vacuum cleaner according to claim 10.
  • FIG. 2 is a schematic cross-sectional view illustrating a construction of a passage system of a vacuum cleaner in accordance with an embodiment of the present invention.
  • the passage system of a vacuum cleaner comprises a suction motor 10, a suction fan 20, a dust filter 31, a dust collecting bucket 41, a fan suction passage 42, a motor case 11, a plurality of discharging holes 11a, an ejector suction passage 62, an ejector 60, an ejector nozzle 61, an ejector chamber 63, a second suction nozzle 64 and a second suction passage 65.
  • the suction motor 10 is installed adjacent to an upper end of the vacuum cleaner to provide the suction force for draw the outside air into the vacuum cleaner.
  • the suction fan 20 is located on an upper end of the suction motor 10 and has blades which receive the suction force from the suction motor 10 and thereby suck the outside air.
  • the dust filter 31 is arranged above the suction fan 20 to filter out dust and other particles contained in the outside air drawn in by the suction fan 20.
  • the dust filter 31 has a doughnut-shaped configuration.
  • the dust-collecting bucket 41 is positioned below the dust filter 31 to collect dust and other particles filtered by the dust filter 31.
  • the dust collecting bucket 41 has a hollow configuration.
  • the fan suction passage 42 is placed at the center portion of the dust collecting bucket 41 in a manner such that outside air that has been through the filtering process to remove the dust and the like by the dust filter 31, flaws through the fan suction passage 42 toward the suction fan 20.
  • the fan suction passage 42 has a cylindrical shaped which is opened at an upper end thereof.
  • the motor case 11 is formed to have a cylindrical shape to accommodate the suction motor 10.
  • the plurality of discharging holes 11a are formed on a circumferential outer surface of the motor case 11 at predetermined places in a manner to exhaust the air that has been pressurized while passing through the suction fan 20 to the outside.
  • the ejector suction passage 62 serves as an exhausting passage and is connected at one end thereof to the circumferential outer surface of the motor case 11 at a predetermined place in a manner such that the air which has been passed through the suction fan 20, can be reutilized.
  • the ejector 60 is formed at the other end of the ejector suction passage 62 to exhaust the air which passed through the ejector suction passage 62.
  • the ejector nozzle 61 is placed at the lower end of the ejector 60 to further pressurize the air which has been already pressurized while passing through the suction fan 20, and then exhaust the air at a high velocity.
  • the ejector chamber 63 is defined in a manner such that an inside of the ejector chamber 63 remains under a low pressure by the air which is ejected from the ejector nozzle 61 at a high speed.
  • the second suction nozzle 64 is formed at a lower end of the ejector chamber 63 in a manner such that outside air can be sucked therein.
  • the second suction passage 65 is connected at one end thereof to the duct collecting bucket 41 in a manner such that air which is ejected therein from the ejector nozzle 61 and sucked therein from the ejector chamber 63, is guided toward the suction fan 20.
  • a second suction path operates in the same manner as a suction path of the conventional vacuum cleaner.
  • the second suction path according to the present invention is formed with a first suction nozzle 71 and a first suction passage 72.
  • the first nozzle 71 directly receives the suction force generated by the suction motor 10 to draw in the outside air containing dust and other particles with intensive force.
  • One end of the first suction passage 72 is connected to the dust-collecting bucket 41 and the other end is connected to the first suction nozzle 71, so that the outside air, which is drawn into the vacuum cleaner by the first suction nozzle 71, can pass through the first suction passage 72.
  • first suction nozzle 71 and the second suction nozzle 64 are formed at the lowermost end of the entire vacuum cleaner structure to allow dust and the like existing on a floor to be easily drawn in along with outside air.
  • the suction motor 10 rotates, and at the same time, the suction fan 20 which is connected to the suction motor 10 also rotates.
  • the suction fan 20 If the suction fan 20 is rotated, the outside air is drawn in and passes through the first suction nozzle 71, the first suction passage 72, the dust collecting bucket 41, the dust filter 31 and the fan suction passage 42 in order. Upon reaching the suction fan 20 and the suction motor 10 after passing through the fan suction passage 42, air cools the suction motor 10 and at the same time is pressurized by the suction motor 10.
  • the motor case 11 which accommodates the suction motor 10, is attached with the plurality of discharging holes 11a in which predetermined amount of air that has been pressurized while passing through the suction fan 20, is discharged to the outside, and the remaining predetermined amount of the air which has been pressurized while passing through the suction fan 20 flows into the ejector 60 through the ejector suction passage 62.
  • a ratio between the preselected amount which is discharged to the outside through the plurality of discharging holes 11a and the predetermined amount which flows out through the ejector suction passage 62, can be adjusted according to the needs by adjusting the size and the number of the discharging holes 11a.
  • the air which flows into the ejector 60, is exhausted through the ejector nozzle 61 formed at the free end of the ejector 60. Since the air is exhausted under a high pressure, it is to be readily understood that the surrounding area near the ejector nozzle 61 is maintained under a remarkably low pressure as explained in the Bernoulli's theorem, and the inside of the ejector chamber 63 which includes the discharging end of the ejector 60, also remains in a significantly low pressure.
  • the outside air is drawn into the vacuum cleaner through the second suction nozzle 64 which is formed at a predetermined position in the ejector chamber 63, as in the case of the first suction nozzle 71.
  • P a pressure at a corresponding point
  • ⁇ a specific weight of fluid
  • V a flow velocity
  • g an acceleration of gravity
  • Z is a height of fluid on a reference plane.
  • the Bernoulli's theorem applies to all incompressible fluid.
  • water heads are divided into a pressure head (P/ ⁇ ) due to a pressure of fluid, a velocity head (V 2 /2g) due to a flow velocity of the fluid, and a position head (Z) due to a height of the fluid.
  • P/ ⁇ pressure head
  • V 2 /2g velocity head
  • Z position head
  • the second suction nozzle 64 is placed below the ejector chamber 63 to intake the outside air which then gets mixed up with the air exhausted from the ejector nozzle 61 before passing through the second suction passage 65. Consequently, in the passage system of a vacuum cleaner according to the present invention includes two suction nozzles that are formed at the outside air suction paths through which dust and the like can be sucked into the vacuum cleaner. Particularly, since the predetermined amount of air that has passed through the suction motor 10 is utilized to draw in the outside air, an efficiency of the vacuum cleaner is increased.
  • FIG. 3 is a schematic cross-sectional view illustrating a construction of a passage system of a vacuum cleaner in accordance with another embodiment of the present invention.
  • this passage construction makes not only the passage system of a vacuum cleaner more complex but also a manufacturing procedure thereof complicated.
  • an outside air passage 70 in which the first suction passage 72 and the second suction passage 65 merge is independently formed.
  • the passage system of a vacuum cleaner in accordance with the present invention allows the outside air containing dust and other particles to flow into the dust-collecting bucket 41 via the outside air passage 70.
  • the passage system of a vacuum cleaner according to the present invention provides more powerful suction force for sucking the outside air through two sucking passages in the passage system, thus the cleaning process can be performed more quickly. Also, when compared with the conventional vacuum cleaner, less amount of input power is required for sucking the same amount of outside air thereby substantially saving energy. Moreover, in the case a rechargeable vacuum cleaner wherein the output of a motor cannot be raised beyond a predetermined level due to limitation within its own specification, greater cleaning capability can be accomplished when the passage system in accordance with the present invention is applied.

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  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (10)

  1. Système de passage pour aspirateur, comprenant : un passage d'aspiration (62) d'éjecteur qui est relié à une première extrémité d'une surface extérieure d'un carter (11) de moteur pour réutiliser de l'air qui a été rejeté par un moteur d'aspiration (10) ; un éjecteur (60) formé à l'extrémité du passage d'aspiration (62) d'éjecteur pour accumuler de l'air qui est passé par le passage d'aspiration d'éjecteur ; une buse (61) d'éjecteur formée à une première extrémité de l'éjecteur (60) pour rejeter l'air à grande vitesse et sous une faible pression ; un second passage d'aspiration (65) ayant une première extrémité placée à une distance prédéterminée de la buse (61) d'éjecteur et l'autre extrémité reliée à un bac (41) de récupération de poussière, de façon que l'air refoulé depuis la buse (61) d'éjecteur et l'air présent dans une chambre (63) d'éjecteur soient entraînés simultanément et conjointement dans la chambre (63) d'éjecteur, puis s'écoulent dans la direction du moteur d'aspiration (10), la buse (61) d'éjecteur étant disposée dans la chambre (63) d'éjecteur, une première extrémité du second passage d'aspiration (65) étant raccordée dans la chambre (63) d'éjecteur de façon que l'intérieur de la chambre (63) d'éjecteur reste sous une basse pression ; une seconde buse d'aspiration (64) formée à un emplacement prédéterminé dans la chambre d'éjecteur pour faire entrer à grande vitesse l'air extérieur ; une première buse d'aspiration (71) placée à un emplacement prédéterminé dans l'aspirateur pour faire entrer l'air à grande vitesse par une force d'aspiration créée par le moteur d'aspiration (10) ; et un premier passage d'aspiration (72) ayant une première extrémité fixée à la première buse d'aspiration (71) et l'autre extrémité reliée à une partie prédéterminée du bac de récupération de poussière (41), de façon que l'air extérieur qui est entraîné à l'intérieur via la première buse d'aspiration (71) soit guidé vers le moteur d'aspiration (10).
  2. Système de passage selon la revendication 1, dans lequel la surface extérieure du carter de moteur est pourvue de plusieurs trous de refoulement (11a) par lesquels une quantité prédéterminée d'air est rejetée à l'extérieur.
  3. Système de passage selon la revendication 1, dans lequel un ventilateur aspirant (20) pour faire entrer l'air est placé au-dessus du moteur d'aspiration.
  4. Système de passage selon la revendication 1, dans lequel le bac de récupération de poussière est installé au voisinage immédiat d'une ouverture d'aspiration du moteur d'aspiration, et un passage d'aspiration du ventilateur est formé pour permettre à l'air qui a été filtré de passer par celui-ci dans la direction du moteur d'aspiration.
  5. Système de passage selon la revendication 4, dans lequel le passage d'aspiration du ventilateur est doté d'une forme cylindrique.
  6. Système de passage selon la revendication 4, dans lequel un filtre à poussière est installé entre une entrée d'aspiration du passage d'aspiration du ventilateur et les premier et second passages d'aspiration de façon que l'air extérieur qui a été filtré puisse être amené à passer par le passage d'aspiration du ventilateur en direction du moteur d'aspiration.
  7. Système de passage selon la revendication 1, comprenant en outre : un passage d'air extérieur pour faire fusionner le première passage d'aspiration et le second passage d'aspiration afin que de l'air extérieur contenant de la poussière et d'autres particules vienne à se mélanger à l'air rejeté depuis la buse d'éjecteur avant d'entrer dans le bac de récupération de poussière.
  8. Système de passage selon la revendication 1, dans lequel la première buse d'aspiration est formée à une extrémité inférieure de l'aspirateur.
  9. Système de passage selon la revendication 1, dans lequel la seconde buse d'aspiration est formée à une extrémité inférieure de l'aspirateur.
  10. Aspirateur comprenant un système de passage selon l'une quelconque des revendications précédentes.
EP01402323A 2000-10-04 2001-09-07 Système d'écoulement pour aspirateur Expired - Lifetime EP1195124B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2000-0058079A KR100375624B1 (ko) 2000-10-04 2000-10-04 진공 청소기의 유로 시스템
KR10-2000-0058080A KR100375625B1 (ko) 2000-10-04 2000-10-04 진공 청소기의 유로 시스템
KR2000058080 2000-10-04
KR2000058079 2000-10-04

Publications (3)

Publication Number Publication Date
EP1195124A2 EP1195124A2 (fr) 2002-04-10
EP1195124A3 EP1195124A3 (fr) 2005-12-28
EP1195124B1 true EP1195124B1 (fr) 2007-10-24

Family

ID=26638438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01402323A Expired - Lifetime EP1195124B1 (fr) 2000-10-04 2001-09-07 Système d'écoulement pour aspirateur

Country Status (4)

Country Link
US (1) US6484355B2 (fr)
EP (1) EP1195124B1 (fr)
JP (1) JP3542788B2 (fr)
DE (1) DE60131055T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017002073A1 (fr) * 2015-06-30 2017-01-05 Control Wizard Pty Ltd Appareil de traitement de surface, filtre et composants associés

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100693835B1 (ko) 2005-07-26 2007-03-12 (주)디케이엠엔이 진공흡입장치
CN112620291A (zh) * 2020-12-24 2021-04-09 广东电网有限责任公司佛山供电局 一种配电设备的除尘装置
CN114733289B (zh) * 2022-04-27 2024-05-14 芦山湘邻纺织有限公司 一种纺纱机

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US2746078A (en) * 1950-11-02 1956-05-22 Syntron Co Vacuum cleaner
US3206787A (en) * 1963-01-28 1965-09-21 Tennant Co G H Scrubbing device
US3562846A (en) * 1969-04-29 1971-02-16 Marven Creamer Apparatus for collecting surface liquids
US3704482A (en) * 1970-10-08 1972-12-05 Joseph W Brannon Cleaning device
CA972510A (en) * 1973-03-16 1975-08-12 Henry Loetkeman Hygienic vacuum cleaner with a circulating air flow
US4023233A (en) * 1975-08-12 1977-05-17 Warwick Pump And Engineering Company Limited Surface cleaning device
DE3406603A1 (de) * 1983-02-28 1984-09-06 Gorenje Muta tovarna poljedelskega orodja, kmetijskih strojev in livarskih izdelkov n.sol.o. Muta, Muta Reinigungsgeraet
DE8513126U1 (de) * 1985-05-04 1985-08-01 Fasse, geb. Brink, Käthe, 2950 Leer Umluftstaubsauger
DE19530976A1 (de) * 1995-08-23 1997-02-27 Paul Recktenwald Umluftstaubsauger
US6725500B2 (en) * 2001-05-03 2004-04-27 Vortex, L.L.C. Air recirculating surface cleaning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017002073A1 (fr) * 2015-06-30 2017-01-05 Control Wizard Pty Ltd Appareil de traitement de surface, filtre et composants associés

Also Published As

Publication number Publication date
DE60131055D1 (de) 2007-12-06
JP3542788B2 (ja) 2004-07-14
EP1195124A2 (fr) 2002-04-10
US20020038491A1 (en) 2002-04-04
DE60131055T2 (de) 2008-08-07
JP2002119446A (ja) 2002-04-23
EP1195124A3 (fr) 2005-12-28
US6484355B2 (en) 2002-11-26

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